close method

@override Future<void> close()

Closes the instance. This method should be called when the instance is no longer needed. Once close is called, the instance can no longer be used.

Implementation

@override
Future<void> close() async {
  super.close();
  for (final deferred in _deferredOps) {
    deferred.callback(deferred.object);
  }
  value.close();
}